Home / 209,012.64-288,520.16-145,387.36

Finding the Fourth Proportional to 209,012.64, 288,520.16 and 145,387.36

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Solution

The fourth proportional to 209,012.64, 288,520.16 and 145,387.36 is: 200,692.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,012.64 : 288,520.16 = 145,387.36 : x
  2. Step 2: Convert to fraction form
    209,012.64/288,520.16 = 145,387.36/x
  3. Step 3: Cross multiply
    209,012.64x = 288,520.16 × 145,387.36
  4. Step 4: Simplify right side
    209,012.64x = 41,947,184,369.18
  5. Step 5: Solve for x
    x = 41,947,184,369.18/209,012.64
  6. Step 6: Final answer
    x = 200,692.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.